# Relationship history for MSHA mine 3503876

Current hierarchy: **Dave  Turin → Golden Streets Mining, L.L.C. → Portable**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Golden Streets Mining, L.L.C. → Portable; 2018-11-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dave  Turin → Portable; 2018-11-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dave  Turin → Golden Streets Mining, L.L.C.; 2018-11-13 to current/open; source msha-controller-operator-history